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ASTM C1240-20

Standard Specification for Silica Fume Used in Cementitious Mixtures

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NORMA vydána dne 15.1.2020

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Informace o normě:

Označení normy: ASTM C1240-20
Datum vydání normy: 15.1.2020
Kód zboží: NS-985207
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Kategorie - podobné normy:

Cement. Sádra. Vápno. Malta

Anotace textu normy ASTM C1240-20 :

This specification covers silica fume for use in concrete and other systems containing hydraulic cement. The material shall composed of silica fume, mostly of amorphous silica. Test methods for chemical analysis, moisture content and loss on ignition, bulk density, specific surface, air entrainment of mortar, strength acitivity index, reactivity with cement alkalis, and sulfate resistance of silica fume shall conform to this specification. Physical tests shall include determining the specimen´s density and the specific surface by utilizing the BET, nitrogen adsorption method. Silica fume shall be stored in such a manner as to permit easy access for the proper inspection and identification of each shipment.

Keywords:
ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

Doplňující informace

1. Scope

1.1 This specification covers silica fume for use in concrete and other systems containing hydraulic cement.

1.2 In the cases of slurried or densified silica fume, perform the tests on the raw silica fume from which these products have been made.

1.3 The units stated in SI are to be regarded as the standard. No other units of measurement are included in this standard.

1.4 The following safety hazards caveat pertains only to the test methods portions, Sections 10 – 19, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Read the material safety data sheets for materials used.

1.5 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes (excluding those in tables) shall not be considered as requirements of this standard.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

C219-20a	Standard Terminology Relating to Hydraulic and Other Inorganic Cements (Includes all amendments and changes 8/28/2020).
C1437-20	Standard Test Method for Flow of Hydraulic Cement Mortar
C183-13	Standard Practice for Sampling and the Amount of Testing of Hydraulic Cement
C135-96(2022)	Standard Test Method for True Specific Gravity of Refractory Materials by Water Immersion
C125-21a	Standard Terminology Relating to Concrete and Concrete Aggregates (Includes all amendments and changes 10/14/2021).
C114-23	Standard Test Methods for Chemical Analysis of Hydraulic Cement
C311/C311M-24	Standard Test Methods for Sampling and Testing Coal Ash or Natural Pozzolans for Use in Concrete
C109/C109M-23	Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 50?mm [2 in.] Cube Specimens)
C430-17	Standard Test Method for Fineness of Hydraulic Cement by the 45-µm (No. 325) Sieve
C441/C441M-17	Standard Test Method for Effectiveness of Pozzolans or Ground Blast-Furnace Slag in Preventing Excessive Expansion of Concrete Due to the Alkali-Silica Reaction
C494/C494M-19e1	Standard Specification for Chemical Admixtures for Concrete (Includes all amendments and changes 8/11/2022).
C604-18(2023)	Standard Test Method for True Specific Gravity of Refractory Materials by Gas-Comparison Pycnometer
C670-24a	Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials (Includes all amendments and changes 3/11/2024).
C1005-20	Standard Specification for Reference Masses and Devices for Determining Mass and Volume for Use in Physical Testing of Hydraulic Cements
C1012/C1012M-18b	Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution (Includes all amendments and changes 1/9/2019).
C1069-09(2022)	Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
C1157/C1157M-23	Standard Performance Specification for Hydraulic Cement
C185-20	Standard Test Method for Air Content of Hydraulic Cement Mortar

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